Electromagnetic device.



Patented Apr. 8, 1919.

llll

To all whom it may concern.'

"the relay independently of the armature o1"` RICHARD G. LEAKE, 0F ROCHESTER, NEW "YBK, ASSIGNR '.-IO GENERAY.'

SIGNAL COMPANY, 0F GATES, YORK, A CORPQBTIGN 0F NEW "3933.

ntnc'rnoxaennrrc navos.l

Specicatozi of 4Letters Patent.

Patented apr. 8,1919.

Application :tiled March 28, 19161. Serial Ifo. 87,192.

Be it known that I',.R1GHARD C. LEAnE, a citizen of the United States, anda resident of the city of Rochester, in the county .of Monroe and State of New York, have .1.1.1- vented a new and useful Electromagnetic i Device, of which the following is a speci- This invention relates to electro-magnetic devices and more particularly to electromagnetic deviceseknown as rotary electric motor relays.

The primary object of/vthis in vention is to so construct a rotary electric motor relay that the circuit-controlling contacts included therein may movey gravitallyor by applied force upon a denergization of the motor of the motor.

Other objects and advantages willappear grosses, and the novel features of the linvention will be particularly pointed out 1n the'appended claims. l

In describing the invention in detail, reference is had Vto the accompanying drawings, wherein I'have illustrated apre erred physical embodiment of yin invention and wherein like characters o reference designate corresponding parts throughout the several views and in which:

Figure l is a vertical vsectional view taken substantiallv along the vertical vaxis of the motor; Fig. 2 is a horizontal section of the motor taken on the line 2-2 of Fig. 1 looking in the direction of arrows a, including the windings of the motor; Fig. 3I is a detail plan view of the spiral cam shown in Fig. 1.v

The relay consists generally of three parts, namely, a casing A, a circuit closing device B, and a motor C.

The casing. A consists 4of a main body portion 1 having two separate end plates or covers 3 which are fastened to the main body portion of the casing l in any con-` 'venient manner, as by screws. l

Securely fastened to the top of the casing 1 is a plate of insulating material G, having slots 7 cut in'thenunder side thereof. A contact carrier 8 and a bearing, arm 9 have their upperends fitted in the lslots 7 of the plate 6 and are iixed to said plate by means of boltsJ 10 and ll respectively, which also constitute binding p'osts lfor attaching circuit wires. An oscillatory merriber 1li is pivota'lly supported between vthe lower ends of bearing arms 9, only one yof which is shown in' Fig-1. The os'cillatable` member is made of insulating material, and'- astened to its upper side by means'of screw 15 is a Contact linger 16, the outer end of which contacts with the contact'in .the lower end of the contact `carrier 8 when the linger 16 is moved sufciently upwardly.. Attached to the bent up portion on the left hand and of Contact nger .16 is a flexible connection 16 which electrically connects contact iinger 16 to the binding pcstiormed by bolt 1l. of bearing arm 9; An arm l? having a.'

'toothed sector 171 at its lower end, visfastened at its lupper-end to the under side oi the oscillatable Irernber 14g in any well known manner-,as y screws 18. f

The motor C consists of an iron shell 19, open at both the top and bottom, the top be-V ing fastried. to th. casing 1, iin any well' lmown manner as by screws. ,Within the shell 19 is an annular stator 2G, .made of n laminations in the well known manner, and

since the casing 19 is entirely open-at-'qthe top, the stator V20 can be slid into its proper.

place in the case 19. The stator 20 is provided With the well Aknown coils 21 and 22, the leads of which,^as shown in Fig 2, are designated by 23 and 24, and 25 and 26 res'pctively.

e rotor consists of a non-magnetic shell 27 of aluminum or other electrically" conductive material, shown 1n Fig. l, attached to a splder 28 which is pinned to. a shaft 29 passing therethrough. The shaft 29 is jourl naled near its upper end in ball bearings 30A in the bottom of casing 1, and at its lower end-in ball bearings 31 'fixed in the -supporting base 32, which just fits into the open space in the bottom of the motor casing 19. The base .32 has an upwardly projecting member 33-A bearing upon its outer face, an annulus 34C laminated in the same manner as stator 20 and held in place by rivet pins 35. The annulus `34 forms a means for dese i pax

' ed thereto will be moved upwardly. I at.

transformer 87,'wire 38, resistance 39, 4'wire s0, lead 2% of the coil 2l, coil v21h-leed 23,*- wires All and 42, switch 43, and wire se, back to the other side oltlie seeondaryof the transformer 137 the other lis from' .one side of the secondary` of the transformer 37,v

wires 38 and e5, reectence s6, wire 47, lead 26 of coil 22, coil 22, leed 525, wires 48 and 12, switch 43 and wire el, back to the other side of the secondary of the transformerIS7.

Thus it will be apparent to those skilled lin the art, that both coils on4 the stator v201 are energized butV the phase relation of -the our# rents 'therein will be different and a roteting field will be established which tends to rotate y the rotor 27.

Practical experiments lieve shown that iff the horizontal medial plane of thereto;a 52? is above the horizontal medial pleno of the stator 20, as shown in Fig. l, then when current is appliedfto the stator 2G, thejrotor 2'? and consequently the' motor shaft 29 oonnecttribute this sesion' to the fact that the medial plane or plone of the resultant magnetic eld of the currents induced in the rotor, these induced currents being limited by the conlines of the rotor, is displaced ronrthe medial or resultant plane of the magnetic .ielol of the' stoten, so that the reaction between --bliese magnetic ields causes an end` wise upward. movement of the rotor, Gb-

a downwai'd movement of the rotor, .ii/ement horizontally or in any other l ation, if desired. Applying this princito 'the device shown in Fig. l, 1t will be seen that spiral cem 36 will be moved up and into mesh with the teeth of the toothed sector l? 1, and as the motor rotates, the sector '171 willocl; the member 14 on lits bearing and bring the contact linger 16 into Contact with. the contac'c at the lower end of Contact carrier 8. When energy is applied to the motor C, by closing switch 4&3, shown in Fig.

2, the rotor 27 will move upwardly, viewed in Fig. 1, and bring the cam 3.6, best shown Fig. 3, into mesh with sector 171. At the saine time rotor 27 will rotate in a clockwise direction thus rotating cam 36 in a clockwise direction and the com 36 is in mesh with sector 171 consequently sector 171`V will be moved upwardly.

l't will be noted that the device shown and described is of the single element nature so thee when switch is opened all the current will be out oil from the stator, and tliev rotor will drop beck to its normal position carrying; with-it shaft 29 and 'the spiral com.

36, thereby disengnging the cani 36 and the sector 171 and permitting the oscillating member lll to return to its normal position against :i stop 3'? mounted in the casing l,

without rotating' the rotor 27. lt is thusapparent that after the sector 17l has been by Letters Potent oil 1. A relay for use in' .reilvv'ey snglialing,4

, the saine principle be used to v lessees selected is merely illustrative, but does not exhaust thepossi e physical embodiment the idee oit' means underlying my invention. llVhat l. claim es new ond desire/to secure be llnite Steins, is:

comprisinga circuit controller basedto es sume a p redeterni l n, tion; s me* operating scid circula een o stator and :a roc seid rotor d of movement endwise end being by a force'tenoling toofanse it to assume a position relative to seid stator in which the medial plane oil the magnetic field oi the our rent induced Kin seid rotor is displaced from the medial piene of the magnetic lielcl or'.

said stator, whereby the rotor is given a pre (leser-mined movement endwise when sind stator 1s energized; and ineens operatively oiled npon' connecting ysaid rotor with said circuitI controller when said rotor takes said movement endwise, 2. A relay lor use in railway signaling,

comprising a circuit controller biased toes sume a predetermined position5an electro-- magnetic meansfor operating said circuit controller and including a movable element, said movable element beinr Y automatically given two different movements upon ener* gi'zation ci said ineens, one for establishing operative connection to the circuit controller and the other for causing operat 'on thereof, said element being biased in opposition to its connecting movement; and means including said movablegelement for providing an operative connection between seid circuit controller and said electromagnetic means, whereby the circuit controller is operated when energy is applied to thel electromagnetic means and may return to its predetermined position in responso to its bias when such energy is cut oil without being required to drive the electromagnetic means boch:-V ward.

3. A relay for use in railway signaling,

comprising a fixed Contact and a coperating,movable con-tact, said movable Contact being biased to assume a predetermin ed position; a stator having windings arranged to produce a rotating field when supplied with ulteitnating current; a rotor disposed in co operative relation with said stator sind capeble of smal movement, said rotor magnet lto its biased position.

4. A relay for use in railway signaling,

' comprisinga circuit controller biased to assume a predetermined position; electromagnetic means comprising a rotor acted' upon by a force tending to move it axially in one direction, and a stator having a field wind ing arranged in coperative relation with the rotor and acting when energized to cause axial movement of the rotor in the opposite direction; and gearing including coperating parts carried by the rotor and said circuit controller 'and adapted to establish an operative connection between the rotor and the circuit controller when the rotor is moved axially by the energization of the stator, whereby said circuit controller will be operated to a circuit controlling position when energy is applied to the stator and may immediately return to its predetermined por sition in response to its bias without causing reverse rotation of the rotor when energy is cut oil.

' An appliance for railway signaling comprising a stator having a field Winding arranged to produce a rotatingfield when supplied with alternating current; a shell type rotor ar'anged in coperative relation with the stator and mounted to move axially, said rotoil being biased to assume a predetermined position and being automatically moved .in opposition to this bias when energy is supplied to the stator; and a movable element automatically connected and disconnected from said rotor as it is moved axially by the energize-tion of tlhe stator and by its bias, respectively.

6. A relay for use in railway signaling, comprising a circuit controller lbiased to assume a predetermined position; electr0mag netic means for operating said circuit centroller, comprising a stator and a rotor, said rotor beingr mounted on a vertical axis to more axially and being influenced by its own weight to assume a position relative to said stator-'in which the medial plane oi' the magnetic field or the current induced in said rotor is above the medial plane of the mag etic ield of said stator, whereby the rotor is moved upon its axis as well as rotatel when energy is applied ,to said stator; and means operatively connecting said rotor with said circuit controller when saidrotor moves upward, 7. A. relay for use in. railway signaling, comprising a contact carrying member mounted or oscillation upon dared pivots. and. 1biased to one extreme position, resilient contact lingers carried by said member, lined .contacts arranged to cooperate with said contact fingers in their extreme positions,

electromagnetic ineens including a movable element for operating said member in oppo sition to its bias, and means including said element for automatically establishing and disestablislhing an operative connection tween said contact carrying member and said electromagnetic ,means upon energias,-

tion. and denergization. thereof respecti vely whereby the contact carrying member, after being operated, may return in response toits bias Without being required to drive the elec tromagnetic means backward. 4

8. A relayfor use in railway signaling, comprising a circuit controller biased to a predetermined position; electromagnetic means including a stator and a rotor for 'operating said circuit controller, .said rotor being biased to move axially in one direction and being automatically moved in the oppo site direction upon euergization' of the sta tor; and means acting upon the axial movement of lthe rotor in opposition to its for establishing an operative connection between the rotor and the circuit controller, whereby the circuit controller is operated when energy is supplied to the stator but ma y return in response to its bias when suoli energy is cut oli' without causing return movement of the rotor., l

A relay for railway signaling comprisn ingcircuit controlling parts biased to one positi'onan alternating current motor for operating said circuit controlling parte and comprising a shell type rotor and a stator, said rotor being biased to more endwise in one direction and being influenced in the opposite direction in opposition to its bias when current. is supplied to the stator, and means for utilizing the endwise movement of the rotor for automatically connecting and disconnecting the 'rotor and the circuit l` .y

controlling parts of the relay.

ll-lCl-liill) C. LEAKE.

titi

litt? 

